Module org.opengis.geoapi

Package org.opengis.referencing.datum

Interface DatumEnsemble<D extends Datum>

Type Parameters:

D - the type of datum contained in this ensemble.

All Superinterfaces:

IdentifiedObject

@UML(identifier="DatumEnsemble",
     specification=ISO_19111)
public interface DatumEnsemble<D extends Datum>
extends IdentifiedObject

Collection of datums which for low accuracy requirements may be considered to be insignificantly different from each other. Every frame or datum within the datum ensemble must be a realization of the same reference system or datum. A datum ensemble is a construct to facilitate the merging of realizations of that common datum. For lower accuracy manipulation, datasets referenced to the various realizations may be merged without change of coordinates.

Constraints

If the datums specify a conventional reference system (RS), then all datums in a datum ensemble shall have the same conventional RS.

Since:

3.1

Field Summary

Fields inherited from interface org.opengis.referencing.IdentifiedObject

ALIAS_KEY, DOMAINS_KEY, IDENTIFIERS_KEY, NAME_KEY, REMARKS_KEY

Method Summary

Modifier and Type	Method	Description
PositionalAccuracy	getEnsembleAccuracy()	Inaccuracy introduced through use of this collection of reference frames or datums.
Collection<D>	getMembers()	Datum or reference frames which are members of this datum ensemble.

Methods inherited from interface org.opengis.referencing.IdentifiedObject

getAlias, getDomains, getIdentifiers, getName, getRemarks, toWKT

Method Details

getMembers

@UML(identifier="datum",
     obligation=MANDATORY,
     specification=ISO_19111)
Collection<D> getMembers()

Datum or reference frames which are members of this datum ensemble. This collection shall contain at least 2 elements. All datum shall have the same conventional reference system (if any).

Returns:

datum or reference frames which are members of this datum ensemble.

getEnsembleAccuracy

@UML(identifier="ensembleAccuracy",
     obligation=MANDATORY,
     specification=ISO_19111)
PositionalAccuracy getEnsembleAccuracy()

Inaccuracy introduced through use of this collection of reference frames or datums. It is an indication of the differences in coordinate values at all points between the various realizations that have been grouped into this datum ensemble.

Returns:

inaccuracy introduced through use of this collection of datums.